Marvelous Machin Motherlode. Interestingly organized collection of hundreds of identified mint and used Machins (with some significant duplication), all laid out on stocksheets in 3 binders. Noted many interesting pieces including phosphors, "colour strips", ink, gum, paper, perforation and design varieties, commemorative Machin sheets, booklets, souvenir sheets, and more. Sure to be some gems in the lot. A perfect winter project to work on with a nice "cuppa" at hand (but not too close to the stamps!) Estimate.